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THE WAR OF DESTINY IS VERY BEST COMPANY OF ASTROLOGY.
  • It always seemed accurate, but as I go to buy some thermometer/hygrometers for animal cages I got out my digital infrared thermometer which I consider a good reference (as it consistently matches both another similar digital and my Kodak Process thermometer.) I measured the body of the Acurite, front, rear, top, bottom; also measured the area around it. All those readings were consistently about 80.4ºF with my reference thermometer. The Acurite was reading about 76ºF. That is too far off for it to be useful as a thermometer. Given that, how can I trust it to measure humidity? I don't even have a reference to compare for humidity (salt trick aside.)The body is made of apparently sturdy plastic, the display is large, pretty well laid out and easy to read if there is some light reflecting ...

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    It always seemed accurate, but as I go to buy some thermometer/hygrometers for animal cages I got out my digital infrared thermometer which I consider a good reference (as it consistently matches both another similar digital and my Kodak Process thermometer.) I measured the body of the Acurite, front, rear, top, bottom; also measured the area around it. All those readings were consistently about 80.4ºF with my reference thermometer. The Acurite was reading about 76ºF. That is too far off for it to be useful as a thermometer. Given that, how can I trust it to measure humidity? I don't even have a reference to compare for humidity (salt trick aside.)The body is made of apparently sturdy plastic, the display is large, pretty well laid out and easy to read if there is some light reflecting off the surface. It's powered by a single AA battery -- I put in Eneloop™ AA when it came, and it has been operating since. The one I have has a magnet on the back that attaches it firmly to a metal (magnetic) surface -- so both the display and body I consider well thought out and executed. I would not recommend this product because it has proven to be in-accurate so there is no point. EDIT: I looked this up on Acurite's website where they post specifications for it:Indoor Temperature Range: 32º to 122º F, 0º C to 50º CTemperature Accuracy: up to +/- 4°F; Learn MoreIndoor Humidity Range: 16% to 98% RHHumidity Accuracy: +/- 5% RHMy results show that it just about matches that accuracy in use. Given its pluses, it may not be such a bad unit after all...but 4ºF is a pretty wide allowance for a lot of uses so it may be better for casual use (haha, how can that be defined?) like guessing at the temp/humidity in your living room? But I would still not select it for even fairly critical applications.

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  • The purpose of this work is to develop and experimentally test a model for the Peltier effect heatpump for the transient simulation in Spice software. The proposed model uses controlled sourcesand lumped components and its parameters can be directly calculated from the manufacturer’sdata-sheets. In order to validate this model, a refrigeration chamber was designed and fabricatedby using the Peltier modules. The overall system was experimentally tested and simulated withSpice. The simulation results were found to be compatible with the experimental results. Thismodel will help designers to better design thermal systems using the Peltier modules.

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